Personal Network SD-WAN Routing With Attested Permissions
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Solution Overview
Problem
Personal Area Networks (PANs) lack direct Internet connectivity and face security challenges due to varying link layer technologies and implicit security models, which complicate efficient data routing and security policy enforcement across devices.
Innovation Solution
Implementing Personal Network Software Defined-Wide Area Networks (SD-WANs) with attested permissions, utilizing attestation and confidential computing to verify device integrity, establish secure channels, and apply consistent security policies across devices, while optimizing data routing based on application-specific metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PAN devices use varying link layer technologies for connectivity, then device compatibility and versatility are improved, but security policy enforcement becomes complex and unreliable
Solution Approach 1:
The patent introduces an intermediary layer (software-defined networking layer) between the diverse link layer technologies and the security enforcement layer. This intermediary abstracts the complexity of varying link layer technologies while providing consistent security policy enforcement through standardized APIs and protocols, resolving the contradiction between device compatibility and security reliability
Solution Approach 2:
The patent changes the parameter of security enforcement from link-layer specific to application-layer independent. By moving security policies to be applied at higher layers with standardized parameters, the system achieves consistent security enforcement across different link layer technologies without compromising either compatibility or reliability
2Device complexity
If PAN devices lack direct Internet connectivity and rely on LAN routing, then network simplicity is maintained, but routing efficiency and security control are reduced
Solution Approach 1:
The patent segments the networking functionality into distinct layers: simple PAN connectivity layer, software-defined routing layer, and security enforcement layer. This segmentation allows each layer to optimize independently - the PAN layer remains simple while the routing layer achieves efficiency through intelligent decision-making based on application metrics
Solution Approach 2:
The patent introduces dynamic routing capabilities that adapt to changing network conditions. The software-defined routing layer can dynamically select optimal paths based on real-time metrics from multiple egress links, transforming the static LAN-based routing into a dynamic, efficiency-optimized system while maintaining overall network simplicity
3Ease of operation
If implicit security models are used in PANs, then ease of operation is maintained, but security policy consistency across devices deteriorates
Solution Approach 1:
The patent implements self-service security where the system automatically discovers, authenticates, and configures security policies without user intervention. The software-defined networking layer autonomously manages security consistency across devices through automated policy distribution and enforcement, maintaining ease of operation while achieving policy consistency
Solution Approach 2:
The patent introduces feedback mechanisms that continuously monitor security policy enforcement across PAN devices and automatically adjust policies to maintain consistency. This closed-loop feedback system ensures security policy stability while requiring minimal user configuration, resolving the contradiction between ease of operation and policy consistency
Data Source
AI summary
Personal network Software Defined-Wide Area Networks (SD-WANs) with attested permissions may be provided. A first one of a plurality Personal Area Network (PAN) devices in a PAN may seed a routing table entry for at least one application that the first one of the plurality PAN devices supports. The routing table entry may include at least one characteristic associated with an egress link between the first one of the plurality PAN devices and a device outside of the PAN. The routing table entry may be exchanged among the plurality of PAN devices in the PAN. Then data may be routed, based on the exchanged routing table entry, in the PAN through the first one of the plurality PAN devices through the egress link to the device outside of the PAN.